Question 145995

Well, if your result from Part a is:
p=-x+62
or, written a little differently:
p=62-x
.
All they are asking you to do is to "plug" it in to:
R=xp
.
So, let's do that:
R=xp
Replacing p with 62-x
R=x(62-x)
The above is "simplified"... you could expand it to look like:
R = 62x-x^2